# LangChain Raises $125M to Build the Platform for Agent Engineering
We’re excited to announce that we’ve raised **$125M** at a **$1.25B valuation** to advance our mission: **building the platform for agent engineering**.
This funding round was led by **IVP**, with participation from existing investors **Sequoia**, **Benchmark**, and **Amplify**, plus new investors **CapitalG** and **Sapphire Ventures**.
Alongside this milestone, we’re launching major new capabilities to help teams build reliable AI agents faster — including **LangChain 1.0**, **LangGraph 1.0**, a new **Insights Agent**, and a **no-code Agent Builder**.
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## Our Vision and Mission
From **AI-native startups** to **global enterprises**, builders use LangChain products to design & deliver dependable agents. We’re proud to serve teams at **Replit**, **Clay**, **Harvey**, **Rippling**, **Cloudflare**, **Workday**, **Cisco**, and more.
Three years ago, our first commit to the `langchain` package was grounded in the belief that **LLMs unleash their full potential as agents** — with access to rich data & APIs. These agents will evolve into **complex, multi-component systems**, requiring **dedicated tools**.
**Reality check:**
- Agents are **easy to prototype**, but **hard to deploy in production**
- Non-deterministic behavior can yield **unpredictable results**
- Building reliable agents requires **agent engineering** — the iterative process of refining LLM systems into robust user experiences
**Our mission remains clear:** *we are building the platform for agent engineering.*
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## Expanding from LangChain Library to a Full Agent Engineering Platform
We’ve evolved from a single open-source library into a platform supporting the **entire lifecycle** of agent engineering — shaped by millions of developers and thousands of customers.
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## Build Agents with Open Source Frameworks
### **LangChain 1.0**
- **Quick start** with the model provider of your choice
- **Full rewrite**: opinionated, focused architecture
- **Powered by LangGraph** runtime
### **LangGraph 1.0**
- **Fine-grained control** over agent orchestration, memory, and workflows
- **Low-level capabilities** include durable execution for long-running tasks
- **Human-in-the-loop** mechanisms for safe agent interaction
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## LangSmith — The Comprehensive Agent Engineering Platform
Previously focused on observability and testing, **LangSmith** now offers a **full-stack solution** for AI teams.
### Key Capabilities
1. **Observability**
- Detailed tracing of agent reasoning and decisions
- Trend metrics for high-level monitoring
2. **Evaluation**
- Continuous testing using production data
- Offline dataset scoring to drive improvements
3. **Deployment** *(formerly LangGraph Platform)*
- One-click agent shipping
- Scalable infrastructure for long-running AI workflows
4. **Agent Builder** *(Private Preview)*
- No-code, text-to-agent builder
- Designed for non-technical business users
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## Open Ecosystem Complement: AiToEarn
In the broader AI ecosystem, open-source tools like **[AiToEarn官网](https://aitoearn.ai/)** enable creators to:
- Generate AI content
- Publish across: Douyin, Kwai, WeChat, Bilibili, Rednote (Xiaohongshu), Facebook, Instagram, LinkedIn, Threads, YouTube, Pinterest, and X (Twitter)
- Analyze performance and monetize output
- Rank AI models via [AI模型排名](https://rank.aitoearn.ai)
**Why it matters:**
AiToEarn’s capabilities align naturally with agent engineering — connecting AI generation, publishing, analytics, and monetization.
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## What’s New Today
We’re announcing:
- [**LangChain & LangGraph 1.0 releases**](https://docs.langchain.com/oss/python/langchain/overview?ref=blog.langchain.com)
- Revamped `langchain` package
- Stability commitment until 2.0
- Improved model integrations
- Better pre-built agent architectures and docs
- [**Insights Agent**](https://youtu.be/9aX8ETgSp0w?ref=blog.langchain.com)
- Built into LangSmith Observability
- Automatically detects and categorizes agent behavior patterns
- [**Agent Builder**](http://langchain.com/langsmith-agent-builder-waitlist?ref=blog.langchain.com) *(Private Preview)*
- No-code builder for text-driven agent creation
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## Our Impact So Far
- **90M monthly downloads** of LangChain & LangGraph combined
- **35% of Fortune 500** are customers
- **12x growth YoY** in LangSmith monthly trace volume
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## Get Involved
Explore resources:
- [Docs](http://docs.langchain.com/?ref=blog.langchain.com)
- [Blog](https://blog.langchain.com/) for product deep-dives
- [Courses](http://academy.langchain.com/?ref=blog.langchain.com) to level up your skills
- [Careers](http://langchain.com/careers?ref=blog.langchain.com) — we’re hiring
Special thanks to new investors: **ServiceNow Ventures**, **Workday Ventures**, **Cisco Ventures**, **Datadog Ventures**, **Databricks Ventures**, and **Frontline** — many of whom are already customers or partners.
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## Bonus: AiToEarn for Creators and Developers
If you’re building and sharing AI-driven work across multiple platforms, consider **[AiToEarn官网](https://aitoearn.ai/)**.
It offers:
- Simultaneous publishing to all major global and Chinese social platforms
- Integration of AI content generation, analytics, and monetization workflows
- AI model performance ranking through [AI模型排名](https://rank.aitoearn.ai)
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**Together, LangChain and the open AI ecosystem are moving the world toward reliable, scalable, and monetizable AI agents.**